try functions deploy CI/CD first time

.github/workflows/deploy-functions.yml

@@ -0,0 +1,24 @@
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - "functions/**"
+      - ".github/workflows/deploy-functions.yml"
+  workflow_dispatch:
+
+jobs:
+  aws_cdk:
+    runs-on: ubuntu-latest
+    steps:
+      - name: cdk deploy
+        uses: youyo/aws-cdk-github-actions@v2
+        with:
+          cdk_subcommand: "deploy"
+          cdk_stack: "stack1"
+          cdk_args: "--require-approval never"
+          actions_comment: false
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          AWS_DEFAULT_REGION: "us-east-1"